1991 Toyota Camry DLX

Additional Info:

this car has been very good to me since i bought it, but recently it's been throwing an oil light at me at low RPMS, along with a distinct lack of power, and the engine sounding louder, more angry when pushing on the gas. i believe there is also a misfire or a vacuum leak, as the entire car shakes at idle, and there's possibly a loose hangar on the exhaust because it rattles. i put about a foot of exhaust piping on including the flex pipe, so there's nothing wrong exhaust wise. holds coolant very well, shifts smoothly, and is very fun to drive.
the driver's side interior door handle is broken and must be opened from the outside or pulled hard towards the dash for it to open. wipers seem to be brand new, applied by the previous owner, i put on a brand new set of tires all the way around, and i have replaced the transmission fluid; DID NOT FLUSH. i'll give it straight, the entire underside of the vehicle is rusty. it's 35 years old. brakes need immediate attention, i have front pads and rotors, and it uses and needs rear drum brakes. would be wonderful for someone who knows what they're doing in regards to oil, or a fantastic parts car.
there is a 10 amp fuse behind the kick panel that has blown out, causing the instrument cluster, PRND2L lights, and tail lights (not brake lights, they work just fine) to not light up. there is a short circuit somewhere, as i replaced the fuse only for it to blow out again. the driver's side tail light bulb also blew out after replacement so i have an extra bulb and fuse. transmission leaked some fluid but it was because i forgot the crush washer when putting the drain bolt back in.
other than that, this is a solid running car, just want to make back what I bought it for. if not sold by next week, i will be trading it in for scrap at a dealer for a new vehicle. thank you for looking, let me know if you have any questions and i will do my best to get back to you!